These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Relationship of circadian rhythms of uterine activity with term and preterm delivery.
    Author: Germain AM, Valenzuela GJ, Ivankovic M, Ducsay CA, Gabella C, Serón-Ferré M.
    Journal: Am J Obstet Gynecol; 1993 Apr; 168(4):1271-7. PubMed ID: 8475974.
    Abstract:
    OBJECTIVE: Our aim was to document the presence or significance of circadian uterine activity rhythms in pregnant women who delivered at term and preterm. STUDY DESIGN: We measured uterine activity in 19 women divided into a control group (low risk for preterm labor, term delivery, n = 7), a group at high risk for preterm labor, term delivery (n = 6), and a group at high risk for preterm labor, preterm delivery (n = 6). Patients were hospitalized for 24 hours every 2 weeks from 26 weeks' gestation until delivery. Uterine activity was measured continuously by external tocodynamometer. RESULTS: Patients delivering at term demonstrated a nocturnal surge (4 to 7 AM) in uterine activity the last 80 days before delivery (p < 0.05, analysis of variance). Patients delivered preterm showed an initial nocturnal surge of uterine activity similar to those delivered at term, but this disappeared 24 days before delivery (p > 0.05, analysis of variance). CONCLUSION: Uterine activity nocturnal surges normally precede term delivery. These surges are lost in women who deliver prematurely.
    [Abstract] [Full Text] [Related] [New Search]